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Fair Value (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair value, by balance sheet grouping

The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of March 31, 2023 and December 31, 2022 (in millions):

			March 31, 2023
			Level 1						Level 2						Level 3						Total
Assets
Cash equivalents			$	599					$	—					$	—					$	599
Available-for-sale investment securities			—						157						13						170
Equity investment securities			11						—						—						11
Aircraft fuel derivatives			—						8						—						8

			December 31, 2022
			Level 1						Level 2						Level 3						Total
Assets
Cash equivalents			$	665					$	—					$	—					$	665
Available-for-sale investment securities			—						324						13						337
Equity investment securities			8						—						—						8
Aircraft fuel derivatives			—						3						—						3

Debt Securities, Held-to-Maturity

The carrying value and estimated fair value of our held-to-maturity investment securities, were as follows (in millions):

			March 31, 2023									December 31, 2022
			Carrying Value			Fair Value						Carrying Value			Fair Value
Held-to-maturity investment securities			$	177		$	171					$	177		$	170

X

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- References

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X

- Definition

Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5B
-URI https://asc.fasb.org/extlink&oid=126970911&loc=SL120269825-111563

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5A
-URI https://asc.fasb.org/extlink&oid=126970911&loc=SL120269820-111563

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563

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